下列函数中,既是偶函数又在区间(0,+∞)上单调递减的是（）

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A： $y = - x^{2} + 1$

B： $y = l g |x|$

C： $y = \frac{1}{x}$

D： $y = e^{- x}$

上一题下一题 0.0难度选择题更新时间:2016-03-03 12:59:57

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A

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阅读短文，完成表格

Our lessons

We have Chinese，Maths，English and Science on Monday morning．In the afternoon，we have PE and Music．On Tuesday morning we have Maths，English，Chinese and Art．In the afternoon，we have Science and Music．On Wednesday morning，we have English，Chinese，Maths and History(历史).In the afternoon，we have Computer and Art．

Weekdays	Monday	Tuesday	Wednesday
In the morning	Chinese	____	English
	____	English	____
	____	Chinese	Maths
	____	____	____
In the afternoon	____	Science	Computer
In the afternoon	Music	____	____

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